Homepage: https://emacswiki.org/emacs/download/better-registers.el
Updated:
Facilities for more powerful registers
This package provides a row of commands, and keyboard shortcuts to make the powerful concept of registers even more powerful (most important it lets you save macros there), and to save them to a file. It is collected as a minor mode. The code requires the cl.el (common-lisp-wannabe extensions) package It is not tested under xemacs